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by Juniper
Product Line: Juniper M Series Series
Product Type: Routing Engine
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Product Description

The RE-400-768-S Juniper Routing Engine is equipped with a 400-MHz Celeron processor, 768 MB of maximum memory, and a 40 GB hard disk for efficient data processing and storage. It features connectivity options including 1x DB-9 console port, 1x DB-9 AUX port, and 1x RJ-45 Management port, facilitating versatile network management. Additionally, it offers expansion capabilities with 1 (total) / 1 (free) x PC card slot and comes with a 1 GB CompactFlash card for additional storage needs.

FAQs for the RE-400-768-S

  • What is the maximum memory supported by the Routing Engine?
    The Routing Engine supports up to 768 MB of memory.
  • How can I connect to the Routing Engine for initial setup?
    You can connect through the DB-9 console port for initial setup and configuration.
  • Is there an AUX port available on this device?
    Yes, there is 1 x DB-9 AUX port available for auxiliary connections.
  • What type of management port is included?
    The device includes a RJ-45 Management port for network management purposes.
  • How many expansion slots does the Routing Engine have?
    There is 1 expansion slot available, which is free for use.
  • Can the PC card slot be used for additional features?
    Yes, the PC card slot can be utilized for expansion or adding new features.
  • What processor is used in this Routing Engine?
    It is equipped with a 400-MHz Celeron processor.
  • What are the storage options available?
    The Routing Engine has a 40 GB hard disk and a 1 GB CompactFlash card for storage.
  • Is it possible to upgrade the CompactFlash card?
    Yes, the 1 GB CompactFlash card can be replaced or upgraded if more storage is needed.
  • What is the purpose of the RJ-45 Management port?
    The RJ-45 Management port is designed for network management and device configuration.

Product Review

The Juniper RE-400-768-S offers a 400-MHz Celeron processor and 768 MB of maximum memory, catering to basic network management and routing tasks. However, its reliance on older hardware components, like a 40 GB hard disk and a 1 GB CompactFlash card, may limit performance and storage capacity for modern networking demands. The inclusion of multiple ports, including a DB-9 console port, a DB-9 AUX port, and an RJ-45 Management port, alongside an expansion slot, provides flexibility in connectivity and expansion options.


The Juniper RE-400-768-S represents a notable advancement in the realm of network management and routing efficiency, designed to cater to the rigorous demands of complex network environments. At the heart of this routing engine is a 400-MHz Celeron processor, which provides a solid foundation for running multiple processes and applications simultaneously without compromising performance. This is particularly beneficial for networks that require high levels of data processing and throughput. Memory capacity is a critical component of any routing engine, and the Juniper RE-400-768-S is equipped with 768 MB of RAM. This substantial memory allocation allows for efficient data processing and ensures smooth operation even under heavy loads. The inclusion of a 1 GB CompactFlash card offers additional storage space for system configurations and network management software, providing administrators with the flexibility to install essential applications without worrying about space constraints. Storage is another key aspect of this device, and it comes with a 40 GB hard disk. This generous storage capacity allows for the logging of vast amounts of data, storage of system backups, and ensures that there's ample room for operating system updates and patches. This is particularly useful in maintaining the security and integrity of network operations. Connectivity options on the Juniper RE-400-768-S are comprehensive, facilitating easy integration into a wide range of network configurations. The device features: - 1x DB-9 console port, allowing for direct device management and configuration. - 1x DB-9 AUX port, which provides an additional connection for remote management or dial-up backup. - 1x RJ-45 Management port, offering a dedicated network interface for system management tasks. These connectivity options ensure that network administrators have multiple avenues for accessing and managing the routing engine, thereby enhancing the overall manageability of the network. Expansion capabilities are also a highlight of the Juniper RE-400-768-S, with one PC card slot available. This slot is free for use, allowing for the addition of compatible cards that can extend the functionality of the device or increase its connectivity options. This feature is particularly useful for networks that may need to adapt to changing requirements or technologies over time. In summary, the Juniper RE-400-768-S is a comprehensive solution for networks that demand high-performance routing and efficient data processing. Its 400-MHz Celeron processor, coupled with 768 MB of RAM and a 40 GB hard disk, provides the necessary resources to handle complex network tasks. The inclusion of a 1 GB CompactFlash card adds an extra layer of flexibility for software and configuration storage. With its array of connectivity options and expansion capabilities, this routing engine is well-suited to meet the challenges of modern network environments, ensuring reliable and efficient operation.


Item Number Juniper RE-400-768-S
Maximum RAM 768 MB
Console Interface 1x Serial DB-9
Auxiliary Interface 1x Serial DB-9
Management Interface 1x RJ-45
Expansion Capability 1 PC card slot available
Processor 400 MHz Intel Celeron
Storage 40 GB HDD
Flash Memory 1 GB CompactFlash

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